[ntp:questions] Re: PPS working or not? FreeBSD 5.4
stenn at ntp.isc.org
Sun Jan 29 20:33:44 UTC 2006
>>> In article <LY8Df.11489$wl.11104 at text.news.blueyonder.co.uk>, "David J Taylor" <david-taylor at blueyonder.co.not-this-bit.nor-this-part.uk.invalid> writes:
John> 5) [Make sure] you have "options PPS_SYNC" in your kernel config
David> 5 - I have not done that explicity. How could I check that, and
David> change it if required? It's been 10+ years since I ran UNIX.
Assuming an x86 box, put the following in /usr/src/sys/i386/conf/PPS:
# PPS -- Generic kernel configuration file for FreeBSD/i386 PPS
and then add the following line to /etc/make.conf:
KERNCONF= PPS GENERIC
(Assuming you want "cd /usr/src && make buildkernel installkernel) to build
both kernels and only install the PPS kernel).
I also add the lines:
link cuaa1 refclock-0
link cuaa1 pps0
to the end of /etc/devfs.conf, and *sometimes* it looks like those links are
not created soon enough in the boot sequence, but it's sporadic and I have
not had time to chase it down yet.
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